总结：拖动显示进度的进度条
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>demo</title> <style> body{margin:0;padding:0;font-size:12px;} .scale_panel{color:#999;width:200px;position:absolute;line-height:18px;left:60px;top:-0px;} .scale_panel .r{float:right;} .scale span{background:url(images/scroll.gif) no-repeat;width:8px;height:16px;position:absolute;left:-2px;top:-5px;cursor:pointer;} .scale{ background-repeat: repeat-x; background-position: 0 100%; background-color: #E4E4E4; border-left: 1px #83BBD9 solid; width: 200px; height: 3px; position: relative; font-size: 0px; border-radius: 3px; } .scale div{ background-repeat: repeat-x; background-color: #3BE3FF; width: 0px; position: absolute; height: 3px; width: 0; left: 0; bottom: 0; } .lanren li{font-size:12px;line-height:50px;position:relative;height:50px;list-style:none;} </style> </head> <body> <!-- 代码部分begin --> <ul class="lanren"> <li> <div class="scale_panel"> <span id="title">0</span> <div class="scale" id="bar"> <div></div> <span id="btn"></span> </div> </div> </li> </ul> <script> var scale = function (btn,bar,title){ this.btn=document.getElementById(btn); this.bar=document.getElementById(bar); this.title=document.getElementById(title); this.step=this.bar.getElementsByTagName("div")[0]; this.init(); }; scale.prototype={ init:function (){ var f=this,g=document,b=window,m=Math; f.btn.onmousedown=function (e){ var x=(e||b.event).clientX; var l=this.offsetLeft; var max=f.bar.offsetWidth-this.offsetWidth; g.onmousemove=function (e){ var thisX=(e||b.event).clientX; var to=m.min(max,m.max(-2,l+(thisX-x))); f.btn.style.left=to+'px'; f.ondrag(m.round(m.max(0,to/max)*100),to); b.getSelection ? b.getSelection().removeAllRanges() : g.selection.empty(); }; g.onmouseup=new Function('this.onmousemove=null'); }; }, ondrag:function (pos,x){ this.step.style.width=Math.max(0,x)+'px'; this.title.innerHTML=pos+'%'; } } new scale('btn','bar','title'); </script> <!-- 代码部分end --> </body> </html>
还有一个gif按钮的图片。就是它-----》
哈哈哈